Java Backend developer

For our client w e are looking for a Full Stack Backend Engineer with strong Java expertise to join our team and help build, maintain, and scale modern cloud-based applications.  About the Role As a developer within the squad, you will be responsible for maintaining and enhancing several existing applications and services used across the organization. You will contribute to accelerating service development, improving system performance, and ensuring a high-quality user experience. You will work closely with business stakeholders, developers, architects, and product owners in a collaborative, agile environment. Key Responsibilities Develop and maintain APIs to support clients and internal services Fix bugs and ensure stability across backend and frontend applications Maintain and improve system operations and performance Identify opportunities to enhance product quality and scalability Contribute to cloud-based application development (AWS) Ensure security, performance, and maintainability in all solutions Collaborate with cross-functional teams to deliver high-quality features Balance business needs with technical sustainability (technical debt management) What We're Looking For Strong experience in Java (21+) and backend development Solid understanding of Agile methodologies (Scrum, Kanban, XP) Experience with Spring Boot 3 / Spring Framework 6 Knowledge of REST APIs, HTTP, JSON, and modern web technologies Experience with microservices architecture (3+ years) Strong understanding of security, caching, messaging (JMS) Technologies and Tools Atlassian stack: Jira, Confluence, Bitbucket Databases: MongoDB, PostgreSQL / SQL Server Cloud: AWS (5+ years) – ECS Fargate, SNS, SQS, Lambda, CloudWatch, CloudFormation, API Gateway, DynamoDB Frameworks and tools: AOP, OpenFeign, Quarkus, Thymeleaf Frontend (Must have ~1+ year) React.js, JavaScript Frontend testing automation Nice to Have Data tools: Snowflake, DBT, Airflow GDPR knowledge (EU) Experience with Selligent (Marigold) We offer:  Remote full-time work B2B contract Salary: 4500 - 5600 EUR (negotible) Recruitment Process: CV Screening: Applications are reviewed within 24 hours. Pre-Screening Interview: A brief Q/A session ( Automated or with a Recruiter ) designed to learn more about your experience related to the required job position. Automated Session (Recommended) – You can complete this session on your own at a time that is convenient for you. The questions and follow-ups are well-structured and designed to highlight your experience and provide detailed insights into your background. This option is recommended because it's usually more detailed and allows us to provide feedback from the hiring manager faster. Session with a Recruiter – You can also have the session with a recruiter. The questions are the same, but the discussion may be a bit less detailed, and feedback might take a little longer. Shortlisting: Qualified candidates are presented to the hiring manager for review. Formal Interviews: On-site discussions with the hiring manager or project team, with feedback provided within 1-2 weeks. Offer and Onboarding: Successful candidates receive a formal offer and begin a structured onboarding process. Information about the processing of your personal data is provided in our Privacy Policy, which is available online at Privacy Policy